在学术贡献方面，SCI的Introduction通过详细阐述研究领域的背景、研究目的和意义、研究方法和数据来源以及预期结果和贡献等方面的信息，为学术界提供了重要的参考和指导。
今天我们就来看一些Introduction中常用于描述研究领域存在问题的词汇和短语：
ambiguous
computationally demanding
confused
deficient
doubtful
expensive
false
far from perfect
ill-defined
impractical
improbable
inaccurate
inadequate
incapable (of)
incompatible (with)
incomplete
inconclusive
inconsistent
inconvenient
incorrect
ineffective
inefficient
inferior
inflexible
insufficient
meaningless
misleading
non-existent
not addressed
not apparent
not dealt with
not repeatable
not studied
not sufficiently+ adjective
not well understood
not/no longer useful
of little value
over-simplistic
poor
problematic
questionable
redundant
restricted
time-consuming
unanswered
uncertain
unclear
uneconomic
unfounded
unlikely
unnecessary
unproven
unrealistic
unresolved
unsatisfactory
unsolved
unsuccessful
unsupported ·~
(the) absence of
demanding (an) alternative approach
(a) challenge
(a) defect
(a) difficulty
(a) disadvantage
(a) drawback
(an) error
(a) flaw
(a) gap in our knowledge
(a) lack
(a) limitation
(a) need for clarification
(the) next step
no correlation (between)
(an) obstacle
(a) problem
(a) risk
(a) weakness
(to be) confined to
(to) demand clarification
(to) disagree
(to) fail to
(to) fall short of
(to) miscalculate
(to) misjudge
(to) misunderstand
(to) need to re-examine
(to) neglect
(to) overlook
(to) remain unstudied
(to) require clarification
(to) suffer (from)
few studies have ...
it is necessary to ...
little evidence is available
little work has been done
more work is needed
there is growing concern
there is an urgent need ...
this is not the case
unfortunately
应用实例
• Few researchers have addressed the problem of...
• There remains a need for an efficient method that can...
• However, light scattering techniques have been largely unsuccessful to date.
• The high absorbance makes this an impractical option in cases where...
• Unfortunately, these methods do not always guarantee...
• An alternative approach is necessary.
• The function of these proteins remains unclear.
• These can be time-consuming and are often technically difficult to perform.
• Although this approach improves performance, it results in an unacceptable number of. ..
• Previous work has focused only on...
• However, the experimental configuration was far from optimal.
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